package cn.tedu.homework.work1;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class JDBCLogin {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection()) {
            Scanner scanner = new Scanner(System.in);
            while (true) {
                System.out.println("请输入用户名:");
                String username = scanner.nextLine();
                System.out.println("请输入密码:");
                String password = scanner.nextLine();

                String sql = "select nickname from userinfo where username=? and password=?";
                PreparedStatement ps = connection.prepareStatement(sql);
                ps.setString(1, username);
                ps.setString(2, password);

                ResultSet resultSet = ps.executeQuery();
                if (resultSet.next()) {
                    System.out.println("登录成功，欢迎:"+resultSet.getString("nickname"));
                    break;
                } else {
                    System.out.println("登录失败");
                }
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }


    }

}
